LOL
Well, yes, I am bulgarian and this is a poem/song about one of the greatest (if not THE greatest) bulgarian kings..
He conquered a big part of the Balkans, even the Bysantian Empire had to pay him taxes to save it's territory.

But this poem is very different from what I've read before.. it's a mix of historic events OK, I am now officially confused.

Oh and if I made any spelling mistakes with the names, it's because I haven't studied history in english
PM me if you need more info.